Methods of producing renewable energy by wastes

ABSTRACT

A method of producing renewable energy from wastes is revealed. It comprises the steps of feeding and smoldering wastes in a combustion furnace, aspirating the smoke of the smoldered wastes by a suction device from the lower of a heat source (the smoldered wastes) to burn away its oxygen so that no oxygen contents existed in the smoke, spraying water over the smoke in order to remove macromolecular impurities, filtering out micromolecular impurities by a filtering unit to produce gaseous energy sources, and at last the gaseous energy sources is introduced into a gasholder for storage and purification to become purified gaseous energy sources.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a method of producing renewable energy from wastes, especially by use of smoldering waste materials, flue anaerobic degasing, spraying and filtrating or other steps to obtain gaseous energy sources, so as to make the best use of energy sources and protect environment.

2. Description of Related Art

As under double stresses of environmental protection issue and energy crisis, alternative energy source is ensuing in succession for many countries; wherein renewable energy is one of most important techniques; furthermore, the renewable energy includes solar energy, bioenergy, marine energy, wind force, non-pumped storage hydropower or other identified sustainable energy supply.

In contemporary renewable energy of many countries consumption, bioenergy is the largest proportion been used, while the term “biomass” means various organics form by photosynthesis, include animals, plants and microorganisms, whereas “bioenergy” is stored in biological mass with the forms of chemical energy, and the biomass appears as a vehicle of energy; one of the most important bioenergy sources is bioethanol, since it has the benefit of high purity, easy storage and hazardless, thereby bioethanol-mixed gasoline can be used for vehicle's engine. Alleged bioethanol is intended to indicate the use of microbes, such as yeasts, bacteria etc. convert digestible sugar, for example glucose, mannose etc. into ethanol. Methods and materials of common bioethanol production and manufacture include:

(1) Convert carbohydrate crop plants, such as sweet potato, corn, rice and many others into glucose by amylase, and then produce ethyl alcohol by fermentation.

(2) Directly extract sugar from sugar-contained plants, such as sugar cane, sugar beet etc., and then produce ethyl alcohol by fermentation.

(3) Hydrolize crude lignin-carbohydrate into monomeric sugars by biochemical approaches, and obtains ethyl alcohol via fermentation, which will become so-called cellulosic ethanol or gasohol.

However, above-described raw materials which harvest from plants such as sweet potato, corn, rice, sugar cane, sugar beet etc. was growing mainly for the purpose of human consumption, not for producing renewable energy; therefore, in the long run if using crops as raw materials source will just like put the cart before the horse and on the contrary will cause food crisis which impacts the way of life and economics of mankind due to lack of alimentary crops.

SUMMARY OF THE INVENTION

Therefore it is a primary object of the present invention to provide a method of producing renewable energy from wastes by use of smoldering waste materials, flue anaerobic degasing, spraying and filtrating or other steps to obtain gaseous energy sources for best use of energy sources and environment protection.

In order to achieve the above object, the method of producing renewable energy from wastes of the present invention includes the steps of smoldering wastes in a combustion furnace, aspirating the smoke of the smoldered wastes by a suction device from the lower of a heat source (the smoldered wastes) to burn away its oxygen so that no oxygen contents existed therein, spraying water over the smoke in order to remove macromolecular impurities, filtering out micromolecular impurities by a filtering unit to produce gaseous energy sources; subsequently, the gaseous energy sources is introduced into a gasholder for settling and cleaning purposes to form purified gaseous energy sources. Accordingly, the purified gaseous energy sources can be used as dynamic fuel to achieve the goal of environment protection by generating energy dynamics from environmental garbage.

After aforesaid steps, ashes can be shaken and fallen into a water pool under the combustion furnace without production of any dust, and the ashes-contained water in the water pool can be used as fertilizer for waste recycling and environmental protection profits.

Furthermore, after the aforesaid water spraying step, the washing from water spraying of the smoke can be drained into a depositing tank for liquid precipitation, and clean water from the washing can be introduced to a sprinkler system in the step of spraying water over the smoke for water recycling and environmental protection profits.

BRIEF DESCRIPTION OF THE DRAWINGS

The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein:

FIG. 1 is a first schematic block diagram of the present invention;

FIG. 2 is a second schematic block diagram of the present invention;

FIG. 3 is a section schematic diagram of the overall structure of the present invention;

FIG. 4 is a section schematic diagram of the combustion furnace of the present invention;

FIG. 5 is section schematic diagram of the reactor cell of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Refer to FIG. 1 to FIG. 5, a method of producing renewable energy from wastes comprises steps of:

(a) smoldering: flammable waste (1), such as rice hulls, maize cobs, peanut hulls, various plants' stems and leaves, weeds, garbage or the like are prepared and put into a combustion furnace (2) for smoldering until smoke are generated in the smoldering process;

(b) smoke suction: a suction device (3) is provided to aspirate the smoke from the lower of a heat source to burn away its oxygen, and thus there are no oxygen contents in the smoke;

(c) water spraying: the sucked smoke is introduced into a reactor cell (4), the reactor cell (4) equipped with a plurality of circulating channels (41), on the top of which a sprinkler system (42) is provided; with the aid of the sprinkler system (42), the macromolecular impurities will be encapsulated in water molecules to remove all the macromolecular impurities;

(d) filtration cleaning: the smoke after being removed macromolecular impurities is introduced into a purification tank (5); subsequently, the purification tank (5) is configured with a filtering unit (51) having a plurality of partitions therein to filter out micromolecular impurities to produce gaseous energy sources;

(e) gas storage and settling: the gaseous energy sources are introduced in a gasholder (6) for storage and purification at the same time, so as to become purified gaseous energy sources;

(f) bottling: filling the purified gaseous energy sources in a collecting bottle (7) for usage.

Through the above-described steps, it is possible to obtain the purified gaseous energy sources which can generate power as concurrently as to treat the ashes generated from the heat source being smoldered in the feeding and smoldering step (a). The treatment of ashes (a1) is provided for shaking ashes into a water pool (21) under the combustion furnace (2), so that no dust will be made. The ashes-contained water in the water pool can be further used as fertilizer.

Still, after, a liquid precipitation treatment (c1) can be made during the water spraying step (c), and provided for draining the waste washing of the smoke being smoldered and sprayed with water into a depositing tank (8). In such a way, the impurities in the waste washing can be settled in the depositing tank (8), and the clean water of the waste washing can be introduced to a sprinkler system (42) for water recycling and environmental protection purposes.

Also refer from FIG. 1 to FIG. 5, the method of the present invention are further explained as below for clear understanding. In the feeding and smoldering step (a), the flammable waste (1) include various waste disposals (1), such as rice hulls, maize cobs, peanut hulls, various plants' stems and leaves, weeds, garbage etc. In this embodiment, the waste (1) are paved on a resting support (22) of the combustion furnace (2) for smoldering, so that smoke and high heat energy can be generated inside the combustion furnace (2) in the smoldering process; therefore, the combustion furnace (2) is designed with an inner barrel (23) and an outer barrel (24), and between the two barrels (23), (24) is provided with a liquid flow space (25) for accommodating cyclic cooling liquid. The smoldering state of the waste (1) in the combustion furnace (2) must be controlled at a suitable temperature since flame, instead of smoke, would be generated during the waste (1) is smoldered at an extremely high temperature. When the smoke is developed from the waste (1) in the combustion furnace (2) at a smoldering state, the suction device (3) can be served to aspirate the smoke from the lower of a heat source to burn out all of its oxygen instantaneously, thus there are no oxygen contents in the smoke, and meantime the pumping action of the suction device (3) also shows a function for appropriately cooling the combustion furnace (2). Then the smoke is aspirated into a reactor cell (4) for water spraying. In the reactor cell (4) is provided with a plurality of circulating channels (41) communicating to each other. A sprinkler system (42) is provided at the top of the circulating channels (41). With the aid of the sprinkler system (42) the macromolecular impurities will be encapsulated in the water molecule being sprayed out of the sprinkler system (42) to remove all the macromolecular impurities. In such a way, the impurity-contained waste washing are drained into a reservoir (43) below the reactor cell (4) and flow through the reservoir (43) into the depositing tank (8) for liquid precipitation. Finally, clean water from the waste washing can be supplied through pipes to the sprinkler system (42) for water recycling purpose.

Continually, the present invention is further provided with a purification tank (5) for receiving smoke or gas in the filtration cleaning step (c). The purification tank (5) is configured with a filtering unit (51) to filter out micromolecular impurities to produce gaseous energy sources; the gaseous energy sources is introduced in the gasholder (6) for storage and purification to become the purified gaseous energy sources. At last, the purified gaseous energy sources are filled in the collecting bottle (7) for further usage.

Furthermore, the ashes generated from the smoldering of the waste (1) will fall into the water pool (21) through a space (221) formed between an upper support (22) and a lower layer support (22) by shaking the supports (22) inside the combustion furnace (2). In such a way, the ashes-contained water in the water pool (21) flow through a pool opening (211) to be used as fertilizer for wastes recycling and environmental protection profits. There is a separator (212) set up in the pool opening (211) to reach level surface of the water pool (21) for blocking external air so as not to suck inflow air when the suction device (3) aspirates the smoke in the combustion furnace (2). 

1. A method of producing renewable energy from wastes, comprising steps of: (a) feeding and smoldering: flammable wastes are placed into a combustion furnace and smoldered to generate smoke; (b) smoke suction: a suction device is provided to aspirate the smoke from the lower of a heat source to burn away oxygen, so that the smoke contains no oxygen; (c) water spraying: the smoke is introduced into a reactor cell having a plurality of circulating channels, on the top of which a sprinkler system is provided for spraying water molecules to encapsulate and remove the macromolecular impurities of the smoke; (d) filtration cleaning: the smoke, after being removed macromolecular impurities, is introduced into a purification tank having a filtering unit to filter out micromolecular impurities to produce gaseous energy sources; (e) gas storage and settling: the gaseous energy sources are introduced in a gasholder for storage and purification at the same time, so as to become purified gaseous energy sources; (f) bottling: filling the purified gaseous energy sources in a collecting bottle for usage.
 2. The method according to claim 1, wherein after the step of feeding and smoldering, the method further includes a step of ashes treatment: shaking the ashes generated from the flammable wastes into a water pool under the combustion furnace, so that no dust is made.
 3. The method according to claim 2, wherein the flammable wastes is paved on an upper layer support and a lower layer support in the combustion furnace, and shaking the ashes on the two supports to flow through a space between the two supports and fall into a water pool under the combustion furnace for the ashes treatment.
 4. The method according to claim 2, wherein in the ashes treatment step an opening is provided on the top of the water pool for users to dig out ashes.
 5. The method according to claim 4, wherein there is a separator set up in the opening to reach level surface of the water pool for blocking air so as not to suck inflow air when the suction device aspirates the smoke in the combustion furnace.
 6. The method according to claim 1, wherein in water spraying step, the method further includes a step of liquid precipitation treatment (c1): draining waste washing of the smoke being sprayed with water into a depositing tank for impurities settlement, and introducing the clean water of the waste washing to a sprinkler system for water recycling.
 7. The method according to claim 2, wherein in water spraying step, the method further includes a step of liquid precipitation treatment (c1): draining waste washing of the smoke being sprayed with water into a depositing tank for impurities settlement, and introducing the clean water of the waste washing to a sprinkler system for water recycling.
 8. The method according to claim 1, wherein the combustion furnace is provided with an inner barrel and an outer barrel, and between the two barrels is provided with a liquid flow space for accommodating cyclic cooling liquid in order to control the temperature of the combustion furnace.
 9. The method according to claim 6, wherein the combustion furnace is provided with an inner barrel and an outer barrel, and between the two barrels is provided with a liquid flow space for accommodating cyclic cooling liquid in order to control the temperature of the combustion furnace.
 10. The method according to claim 7, wherein the combustion furnace is provided with an inner barrel and an outer barrel, and between the two barrels is provided with a liquid flow space for accommodating cyclic cooling liquid in order to control the temperature of the combustion furnace. 